MicroPython Forum

Below are some updates that can be made to makeimg.py to allow automatic creation of a file system with files baked into firmware-combined.bin. Just create a directory named micropython/ports/esp8266/fs_files and put the files you want on your ESP8266 into that directory. If the the fs_files direct...

and time.ticks_us() is only slightly better (fell 10 seconds behind in a 10 minute test). Then you made a mistake or your device is broken. time.ticks_us() is very accurate. (about 2 seconds per 24 hours or less). Are you aware that ticks_us() uses a 30-bits counter that overflows after about 17 mi...

As a simple measure you can use frozen bytecode, which embeds compiled code into flash. Then there is no python code in the file system except maybe main.py or boot.py. But even the code there can be compiled into flash, or put into _boot.py, which anyhow resides in the flash memory. Still, people ...

There is a GitHub issue related to the inability of the ESP8266 to keep accurate time: https://github.com/micropython/micropython/issues/2724 The issue has been open for nearly 3 years and has an associated pull request, but it appears there is some debate about the integrity of the change. My testi...

Using this post by @jimmo as guidance I did a bit of experimentation to see which flags could be disabled to reclaim some heap. This isn't an exhaustive list, but these were the only things I was able to disable to keep my program running as desired. Note the large bbs savings when MICROPY_PY_WEBREP...

Depending on your variable you can do as @stijn suggested in this post.

Works like a charm! Thanks man!

Since you modify main.c anyway, you could store the value as an integer in globals() so no need for a module? Can you expand on this a bit? I did some searching for "globals" and I do see some functions of interest like mp_load_global() and mp_globals_set(). Unfortunately the term "globals" is used...

I change MICROPY_PY_OS_DUPTERM from its default value of 2 to 1 to regain 8 bbs and also only run this bit of code in main.c if the value is 2: #if MICROPY_PY_OS_DUPTERM == 2 dupterm_task_init(); // Activate UART(0) on dupterm slot 1 for the REPL { mp_obj_t args[2]; args[0] = MP_OBJ_NEW_SMALL_INT(0)...

There is #define in mpconfigport.h I want to know the value of in my Python code. I know I can make a new C module to get access I want, but I was hoping there was some easier way.